Zitat:I want to ask, is there any hope of decoding the Sony audiocassettes?
To the same extend like TDK and Maxell... I don't think so, but I had the same feeling when I tried Maxell after I managed to decipher most of the TDK codes around 5 years ago.
And when I tried again earlier this year, suddenly I had an idea and it went very easy from that point on.
So far I'm pretty sure, that for many Sony Cassettes from the 80s til somwhere around 1991-92 the third digit from the right is the year of manufacturing and after that, It might be the second digit from the right, but there are some Sony cassettes where it does not make sense...